USB 2.0, Microsoft Windows (32-bit and 64-bit), Linux (32-bit), Android, 500 ppi, 18 x 25 mm (0.7" x 1.0"), Optical, 320 x 480 pixels, -10°C ~ +50°C, 82 x 58 x 27 mm (3.2" x 2.3" x 1.1"), Touch.
USB 1.1/2.0, Microsoft Windows (32-bit), 569 ppi, 13 x 25 mm (0.5" x 1.0"), 296 x 560 pixels, 122 x 73 x 61 mm (4.8" x 2.9" x 2.4").
USB 2.0, Microsoft Windows (32-bit and 64-bit), Linux (32-bit), Android, 500 ppi, 16 x 18 mm (0.6" x 0.7"), 288 x 320 pixels, 66 x 90 x 58 mm (2.6" x 3.5" x 2.3"), 185 grams (6.5 oz), -10°C ~ +50°C.
RealScan-D Portable Dual Finger Live Scanner, USB 2.0, Microsoft Windows (32-bit), 500 ppi, 48 x 48 mm (1.9" x 1.9"), Roll or Touch, Optical, 900 x 900 pixels, 84 x 171 x 63 mm (3.3" x 6.7" x 2.5"), +2°C ~ +49°C.